<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <style>
        .fr {
            float: right;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="row">
            <div class="col-xs-6 col-xs-push-3"
                style="border: 1px solid grey; border-radius: 5px; padding: 10px; margin-top: 80px;">
                <form>
                    <div class="form-group">
                        <input class="form-control">
                    </div>
                </form>
                <ul class="list-group">
                    <li class="list-group-item">
                        <input type="checkbox">
                        吃饭
                        <button class="btn btn-xs btn-danger fr">删除</button>
                    </li>
                    <li class="list-group-item">
                        <input type="checkbox">
                        睡觉
                        <button class="btn btn-xs btn-danger fr">删除</button>
                    </li>
                    <li class="list-group-item">
                        <input type="checkbox">
                        打豆豆
                        <button class="btn btn-xs btn-danger fr">删除</button>
                    </li>
                </ul>
                <p>
                    <input type="checkbox"> 已完成 2/全部3
                    <button class="btn btn-danger fr">删除已完成</button>
                </p>
            </div>
        </div>
    </div>
</body>

</html>